Impeovement in



@einen 'tats atwt @Hirn SEDGWIOK A. SUTTON, OF DIXON, ILLINOIS, ASSIGNOR TO HIMSELF, W.

- UHL, AND LYSANDER FLAGG. i

Letters Patent No. 80,679, dated August 4,1868.

iuriiovumtur IN- rits-comme Maestrias.

TO ALL WHOM IT MAYOOOERN:

Be it known that I, SEDGWICK A. SUTTON, 'of Dixon, in the count-y of Lec, and State of Illinois, have made l and invented new and uisei'ul Improvements in File-(plotting:r Machinery; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to thel accompanying drawings, forming part of this specication.

This invention'relates to certain new and"useful improvements in Ele-cutting machinery, end is moreespecially designed to bc applied to a ilc-cutting machine, for which Letters Patent Vwere granted to Edward 'Bucklim bearing date February 27, 1866. y

The present invention relates i First,to,an improvement in the hammer-shaft, as hereinafter fully shown and described, whereby the teeth areicut more perfectly than hitherto,and the chisel, in its ascent, prevented from cutting of a tooth made by a previous cut, a-contngency of not unfrcquent occurrence in the operation of other machines. i

Secondly, this invention relates to an improved pressureLroller, the manner "of applying it to the machine, the., whereby it may always headjusted at a proper` distance from the chisel; 'and Y Thirdly, this invention relates to an improvement in thc screw-feed, the half nut Vpertaining to the same, whereby all play or backlash is avoided.

In the accompanying drawings-- Figure lis aside view'of` that portion of my invention which relates to the l1axnmer-shaft and pressure-roller.

Figure 2 is a. front view of thc'samc.

Figure 3, a planor top view of the same,

Figures 4 and 5, views pertainingto'th'e improvement which relates to the screw-feed.V

Similar letters of reference indicate corresponding parts. K

A represents a facc-plate, which is bolted to the framing of themachine,'and B is a guide-plato, which is secured by a pivot-bolt, ra', to the faceplate A, said plate being allowed to work on bolt a, andretained or steadied in position or movement by a screw, b, which passes throughs. curved slot in A, and into the ,rear side off.V

Within the guide-plate B there is fitted a slide, C, saidplate beingprovided with a dove-tail groove to receive the slide, and the latter having dove-tail sides, by which the slide is retained'in the plate,i(see tig. 3.) The lower end of the slideC has a socket, D, projecting horizontally from its front side, and in this 'socket a slide, E,Vis fitted and secured by a`set-scre\.v, c. In the outer end of this slide there is a. roller, F, having al convex periphery, as 'shown in figs. 2 and 3.

Therear of thc face-plate A has two arms, d d, extending longitudinallyfrom it, and in the outer part of these arms nrethcbearings oi' the hammer-shaft G. p p

This hammer-shaft .is of eurved'er bent form, as shown clearly iii-tig. liand the object of the bends .is to bring the journals c e about ina horizontal plane with the chisel II when the latter is in contact with the fileblank, (sec lig.- l.) By this. arrangemenn'the chisel is prevented from'cutting olf a tooth made by a preceding cut, a contirgendy'wl-iichnot unfrequently occurs when thc journals e c are much higher than the face of the {ile-blank, owing to the circle described by the chisel throwing or rolling the tooth back; so much so, that when the chiselldcscends to maken cut for a succeeding tooth, it is liable to come in contact with the edge of the tooth made by the preceding cut', and completely destroy it, and spoil the file. This dilculty is fully obviated by my improvement. i I

The roller F is a pressure-roller simply, and, owing to its .connection with the swivel on pivoted plato B, is allowed to conform to the position 'of the {ile-blank, shown in red in iig, 1, on which it bears, and, by adjusting the slide E, the rollerd1 may always be kept at a proper point in relationto the chisel H.

The pressure-roller is made to bear upon the lc-blank by means of a loaded lever, I, the fulcrum-pinf of .which passes into a standard, J, pivoted at its lower end to the face-plate A,'as shown at g, so as to be adjustable, the lever I having an oblongslot, h, madev in it, through which a screw, ff, passes into the slide C.

v:By adjusting the standard J, `und thereby moving the leverI, the eilieiency of the latter may beincreased o'r- Adiminished,'and the rollei-F mediel to bear with' a'greater or less degree ofpressure on the file-blank, as required.

I "K represents a clanp, composednof twc puits or jaws,j j', connected by a. joint, lc, at their lower ends.

The upper partsl of these jaws, at their face'sides, are hollowed out in semicircular form, the cavity of the jaw jbeingslnootlr,I and j having a; screw-thread, Z, like :n.nut, to cngagewith the screw of the feed-mechanism,

when the two jaws are in contact7 The -two jaws `ure held in contact by a Ispring-cntch,'-L, at 'their lupper ends.

i Mis a'lever, the lower end of which is forked and secured to the jaw j by a. fulcrum-pinmz, the lower ends of tlieprongs of theforks having a'rod or pin, it, passing through them,'whic` h pin passes between the twojowsjj".

This lever. M also has a pin, o, attached, which passes into a recess in theftopl of the jawj, arid has a shoulder onrit to'act against the edge of the catch L, and disengage the saine from the jaw j when the lever is drawn back.' v i 1 t l, Having thusvdeseribed my invention, I claim as new,`and desire to secure by LettersPatent- 1. The combination and arrangementof the pivoted guide-plate B, slides yC and E, andthe convex pressurerollerl F, substantially as and for the purpose specified. A A v 2. The loaded. leyer I, arrangedor applied substantially as shown, with the standard J and oblong slot t,

in combination with the slides C E and convex pressure-roller F, substantially as and for the purpose set forth.

l `3. The cla-mp K, composed of the jaws jj', lever M, provided with the pins n o, and the catch L, applied .to the clamp, lall arranged to operate in the'manner substantially as and for the purpose specified.

` s. A. SUTTON Witnesses:

- O. WHEELER,

HARVEY MORGAN. 

